This form was revised January 1, 2019. It is effective for transactions occurring after January 1, 2019, regardless of the contract date. Form 5403 is mandatory to be included with any deed recordation In Delaware. The revised form authorizes the State of Delaware to withhold the tax on any capital gains at the time of closing, although some sellers may be exempt from withholding. Copeland Taylor LLC can assist sellers seeking competent financial- legal advice on completing this form during real estate closings.